BRPI0809919B1 - HEAT EXCHANGE HEAT TRANSFER ELEMENT BASKET ASSEMBLY - Google Patents

Abstract

heat exchanger heat transfer element basket assembly heat exchanger heat transfer element basket assembly (500) for receiving heat transfer element plates (850) therein, having first and second strips one-piece side panels (520a, 520b), a pair of inner corner flanges (528a, 528b), an i-shaped divider plate (530), a pair of outer corner flanges (522a, 522b), a first and a second end strip (526a, 526b), and a cap. the first and second one-piece side strips (520a, 520b) are spaced apart, each has a central portion (625) which is located along an inner end of the assembly (500), a first extension (630) positioned to be located along a first side of the assembly (500), and a second extension (635) positioned to be located along a second side of the assembly (500). each of the first and second extensions (630, 635) has a flange portion that is folded through the plate (850) to be operative to retain the plates (850) in the assembly (500). The pair of inner corner flanges (528a, 528b) connect the first one-piece side strip (520a) with the second one-piece side strip (520b). the i-shaped divider plate (530) is positioned to be located within the plates (850) when the plates (850) are brought into position within the assembly (500), and operative to connect the first and second extensions (630) , 635) to each other. the cap consists of two corner flanges (522a, 522b) and end strips (526a, 526b) that are operatively designed to interconnect the first and second extensions (630, 635) of the one-piece side strips (520a, 520b) .

Description

DESCRIPTION REPORT OF THE PATENT OF INVENTION FOR ASSEMBLY OF HEAT TRANSFER ELEMENT OF HEAT EXCHANGER.

Field of the Invention [001] The present invention relates to a rotary regenerative heat exchanger, and, more particularly, to a low profile heat transfer element basket assembly optimized for use in such a heat exchanger.

Background of the Invention [002] The present invention has specific application in a heat transfer apparatus in which the heat transfer element, also called a sheet or plate, is heated by contact with a hot gaseous heat exchange fluid and, then brought into contact with a cold gaseous heat exchange fluid in which the heat transfer element gives off the heat that the heat transfer element received due to the contact of the heat transfer element with the heat exchange fluid hot gaseous heat mentioned above.

[003] One type of such a heat exchange device, which is commonly found in use, is one that in the industry refers to a rotary regenerative heat exchanger. Typically, such a rotating regenerative heat exchanger includes a cylindrical rotor that is divided into compartments and in each of which a plurality of heat transfer plates are arranged which, as the cylindrical rotor rotates, are alternately exposed to a flow of a hot gaseous heat exchange fluid, said cylindrical rotor being then rotated as a result of which the plurality of heat exchange plates are exposed to a flow of cold gaseous heat exchange fluid that must be heated. The compartments into which the heat exchanger's cylindrical rotor is typically located each house a plurality of

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2/30 assemblies of basket of heat transfer element that is properly assembled in them and normally each make a pie shape configuration. Each of the transfer element basket assemblies is designed to receive a plurality of heat transfer plates (e.g., sheets or elements) therein. Each plate of this plurality of heat transfer plates, when exposed to a hot gaseous heat exchange fluid absorbs heat from it, and then, when each plate of this plurality of heat transfer plates is exposed to a heat exchange fluid cold gaseous, which must be heated, will transfer the cold gaseous heat exchange fluid and the heat that has been absorbed from the hot gaseous heat exchange fluid by each plate of the plurality of heat exchange plates.

[004] Typically, such a prior art form of basket assembly of heat transfer element comprises a pair of spaced end plates, which are secured together by paired side strips which are designed to interconnect the end plates of the shape the prior art of assembling the heat transfer element basket along the sides as in the prior art of assembling the heat transfer element basket, as in the manner described and shown in US Patent Nos. 3,314,472 and 4,606,400. According to the prior art teachings of US Patent Nos. 3,314,472 and 4,606,400, a plurality of heat transfer plates are stacked in strictly spaced relation within the housing of the prior art basket element assembly technique heat transfer in order to thus provide a plurality of passages between the adjacent plates of the heat transfer plates, such that the heat exchange fluids can pass through them. Furthermore, according to such teachings of the prior art, side strips are

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3/30 formed to interconnect the spaced end plates as in the prior art of assembling the heat transfer element basket, in such a way as to extend in pairs along the opposite sides of the stacked arrangement of heat exchange elements. With respect to the teachings of the prior art, on each side of the heat exchange element, a first side strip is provided, which extends between the upper regions of the end plates spaced in the manner of the prior art of assembling the transfer element basket of heat, and a second side strip, extending between the lower region of the end plates in the form of the prior art of assembling the basket of heat transfer element in spaced parallel to the first side strip mentioned above. These side strips can be provided with inward flanges along the longitudinal edge which is at the edge of the prior art form of basket assembly of heat transfer element, so as to provide a retaining surface which is designed to be operative for the purpose of preventing the heat transfer plates from falling off the open ends in the manner of the prior art of assembling the heat transfer element basket, as shown, for example, in US Patent No. 3,314,472. Typically, according to the teachings of the prior art, one or more retaining bars are welded between the end plates in the form of the prior art assembly of a heat transfer element basket through the upper and lower ends thereof, in order to thus further preventing the heat transfer element plates from falling out of the open ends in such a way as the prior art of assembling the heat transfer element basket.

[005] Although, such prior forms of heat transfer element basket assemblies are still commonly

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4/30 found in use, such prior art forms of basket assemblies of heat transfer element are typically subjected to rotational torsion of the side strips that are used here, as well as lateral deformation due to the arching of such side strips, which are used here to interconnect the spaced end plates. US Patent No. 4,739,822, to Mergler, which is entitled Low Profile Element Basket Assembly for Heat Exchanger, and which is assigned to the same assignee as the present invention, and which is incorporated here in its entirety, is addressed to an invention which is intended to address such rotational torsion and lateral deformation from which these forms of the prior art of heat transfer element basket assembly suffered. While the invention addressed to US Patent No. 4,739,822 was considered to achieve its objectives, improvements to the assembly of the heat transfer element basket, which is described and illustrated in US Patent No. 4,739,822, have been considered as still possible to be realized.

[006] In figures 1 and 2 of the present patent application, a basket assembly of heat transfer element 130 of US Patent No. 4,739,822 is illustrated. This heat transfer element basket assembly 130 is comprised of a plurality of heat transfer element plates 132, which are arranged in a stacked arrangement, so as to provide a plurality of flow passages located between adjacent plates of the heat transfer element plates 132. This stacked arrangement of heat transfer element plates 132 is suitably arranged so as to be arranged between a first end plate 134 located at one end of the heat transfer element basket assembly 130 and a second end plate 136 located at the other end of the

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5/30 heat transfer element basket 130. These end plates 134 and 136 are suitably positioned to support the ends of the stacked arrangement of heat transfer element plates 132 and are held in place there by means of strips side strips 140, 142 and 150, 152. These side strips 140, 142 and 150, 152 are arranged along opposite sides of the stacked arrangement of heat transfer element plates 132 so as to be positioned at the top and bottom edges respectively of the heat transfer element plates 132, whereby side strips 140, 142 and 150, 152 are operative to interconnect the first end plate 134 with the second end plate 136, the first plate end 134 and the second end plate 136 being spaced apart.

[007] Continuing with the description of the heat transfer element basket assembly 130 of US Patent No. 4,739,822, the side plates 140 and 142, as described and illustrated in US Patent No. 4,739,822, are each which, welded at one end in the upper right corner and the upper left corner, respectively, of the end plate 134 and additionally each are also welded at its other end in the upper right corner and the upper left corner, respectively, of the plate end plate 136, which is located at the opposite end of the heat transfer element basket assembly from where the end plate 134 is located. Similarly, side plates 150 and 152, as described and illustrated in US Patent No. 4,739,822, are each welded at one end in the lower right corner and the lower left corner, respectively, of end plate 134, being additionally also welded, each, at its other end in the lower right corner and the lower left corner, respectively,

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6/30 of the end plate 136, which is located at the opposite end of the heat transfer element basket assembly from the wave end plate 134 is located.

[008] With additional reference, side strips 140, 142, 150 and

152 of the heat transfer element basket assembly 130 are, as described and illustrated in US Patent No. 4,739,822, provided with flanges along their respective longitudinal edges that extend in juxtaposed relationship to the upper and lower edges, respectively, of the heat transfer element basket assembly 130. For this purpose, the side strips 140 and 142 are provided with flanges 141 and 143, respectively. These flanges 141 and 143 extend inwardly from the inner longitudinal edges of the side strips 140 and 142, respectively, so as to be located adjacent to the upper edges of the heat transfer element plates 132. Similarly, the side strips 150 and 152 are provided with flanges 151 and 153, respectively. These flanges 151 and 153 extend inwardly from the inner longitudinal edges of the side strips 150 and 152, respectively, so as to be located adjacent to the lower edges of the heat transfer element plates 132. These upper flanges 141 and 143 and these lower flanges 151 and 153 function to provide retaining surfaces along the upper and lower edges of the heat transfer element basket assembly 130, which are designed to be operative to prevent heat transfer element plates 132, which are stacked within the heat transfer element basket assembly, fall off the open ends of the heat transfer element basket assembly 130 during transport, or handling, or installation thereof. In addition to these upper flanges 141 and 143 and these lower flanges 151 and 153, the retaining bars 138 are

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7/30 typically also welded by points between the end plates 134 and 136 on the open top and bottom of the intermediate heat transfer element basket assembly 130 to the side strips 140, 142 and 150, 152 in order to thus assist additionally preventing the heat transfer element plates 132, which are stacked within the heat transfer element basket assembly 130, from falling out of the open ends of the heat transfer element basket assembly 130.

[009] According to the invention to which US Patent No.

4,739,822, a reinforcement member 160 is disposed intermediate, that is, preferably halfway between the spaced end plates 134 and 136 of the heat transfer element basket assembly 130 and parallel thereto. This reinforcement member 160 is suitably positioned therein so as to extend transversely through the heat transfer element basket assembly 130. In addition, this reinforcement member 160, as described and illustrated in US Patent No. 4,739. 822, is welded on the side edges of the same to the side strips 140, 142, 150 and 152 to which reference was made previously in order to structurally interconnect the side strips 140, 142 and 150, 152 at a point that is close to the intermediate extension of the heat transfer element basket assembly 130, so as to increase the structural integrity of the frame of the element basket assembly 130.

[0010] With additional reference to the reinforcement member 160, as best understood with reference to figure 2a of the present patent application, the reinforcement member 160 may comprise a single plate 175, which is similar in nature to the end plates 132 and 134 previously described here, which extend from the top to the bottom and from side to side across the entire cross-sectional area of the wire transfer basket assembly

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8/30 heat 130 at the respective opposite ends thereof. Continuing with the description, the only reinforcement member 175, in accordance with the teachings of US Patent No. 4,739,822, is welded on each of the side edges thereof to each of the upper side strips 140 and 142 and lower side strips 150 and 152, as best understood with figure 2 of the drawings in order to thus structurally interconnect all side strips 140, 142, 150 and 152. [0011] Alternatively, as best understood with reference to figure 2b of the present patent application, the member reinforcement 160 may comprise a pair of elongated and spaced double plank members 170a and 170b, which are suitably positioned to extend through the upper region of the heat transfer element basket assembly 130 and through the lower region of the heat transfer element basket assembly 130, respectively. With further reference to it, member 170a is welded on the side edges of it to the upper side strips 140 and 142, while member 170b is welded on the side edges of it to the lower side strips 150 and 152.

[0012] Continuing the description, both the single reinforcement member 175 and the two reinforcement members 170a and 170b are designed to be operative to provide a crossover that is suitable for interconnecting the upper side strips 140 and 142 with each other and that is also suitable for interconnecting the lower side strips 150 and 152 with each other, at the intermediate extension or close to the intermediate extension of the heat transfer element basket assembly 130 between the spaced end plates 132 and 134 of the transfer element basket assembly heat exchanger 130 in order to thus increase the structural integrity of the frame of the heat transfer element basket assembly 130. As a consequence, not only the weight capacity of the basket assembly

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9/30 heat transfer element 130 is increased, but additionally also the rotational torsion of the side strips 140, 142 and 150, 152 as well as the lateral deformation of the frame of the heat transfer element basket assembly 130 are also prevented respectively . Although not shown in figure 2a of the present patent application, the single reinforcement member 175 can additionally be used as a means of lifting the heat transfer element basket assembly 130.

[0013] Heat transfer element basket assembly

130, as described and illustrated in US Patent No. 4,739,822, was considered to require an extended amount of time to manufacture due to the amount of manual welding required. For this purpose, the use of four separate side strips 140, 142, 150 and 152 and two separate end plates 134 and 136 require that the heat transfer element basket assembly 130 be completely welded by hand during manufacture. In addition, such manual welding during manufacture requires not only that extra time be proportionally distributed for the purpose of making the adjustment, two welding accessories that are necessary to carry out manual welding, but extra personnel for this purpose, which, in turn, instead, it not only represents a high cost, but also introduces the possibility of quality assurance issues associated with this. It has been found that such extra time can cause delays in the assembly line process, which is employed for the purpose of manufacturing the heat transfer element basket assembly 130. Consequently, there is a need for a basket assembly heat transfer element that, for the purpose of its manufacture, can be assembled without the need for manual welding.

[0014] Additionally, the excessive amount of material is used

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10/30 in the manufacture of the single reinforcement member 160, the double reinforcement member 170a and 170b, and of the end plates 134 and 136 of the heat transfer element basket assembly 130, which is described and illustrated in US Patent No. 4,739,822. In addition, the size and shape of the reinforcement member 160, 170a and 170b and the end plates 134 and 136 which are employed in the assembly of the heat transfer element basket 130, which is described and illustrated in US Patent No. 4,739,822, require them to be welded during the manufacturing process. This results in waste material being produced, as well as an additional cost for the manufacture of the heat transfer element basket assembly 130. Consequently, there is a need for a heat transfer element basket assembly that does not result in excess material that is required to manufacture it.

[0015] Another disadvantage that is associated with the assembly of heat transfer element basket 130, which is described and illustrated in US Patent No. 4,739,822, is that flanges 141, 143, 151 and 153 on the strips side panels 140, 142, 150 and 152 were considered to be operative to prevent the flow of fluid from reaching the heat transfer element plates 132. Consequently, there is, in addition, a need for a wire transfer basket assembly heat in which a smaller amount of the fluid flow would be blocked by the structural members of the heat transfer element basket assembly.

Objectives of the Invention [0016] It is an objective of the present invention to provide a new and improved heat transfer element basket assembly, which is characterized by its structural integrity.

[0017] It is also an objective of the present invention to provide a new and

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11/30 improved that is characterized by the fact that the material weight of the heat transfer element basket assembly has been reduced without any loss in its structural integrity.

[0018] Another objective of the present invention is to provide a new and improved heat transfer element basket assembly that is characterized by its reversibility, thus providing maximum durability of the heat transfer element plates, which are supported on the heat transfer element basket assembly, in order to allow the heat transfer element basket assembly to be inverted in its installed position inside a rotary regenerative heat exchanger, when such inversion of the heating element basket assembly heat transfer becomes desirable in order to allow both ends of the heat transfer element basket assembly to be exposed equally to the corrosive environment existing in a rotary regenerative heat exchanger.

[0019] Yet another objective of the present invention is to provide a new and improved heat transfer element basket assembly, in which a single piece side strip is used, thus reducing the number of parts required for basket assembly of heat transfer element and thereby also reducing the amount of welding that is required during the manufacture of the heat transfer element basket assembly.

[0020] Yet another objective of the present invention is to provide a new and improved heat transfer element basket assembly, in which the front area of the basket has been increased by reducing the width of the plate support flange extensions of the simultaneously reducing the pressure drop by installing a basket of heat transfer element,

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12/30 while at the same time improving the thermal performance of the heat transfer element plates, which are supported in the heat transfer element basket assembly.

[0021] The above objectives, as well as other objectives, characteristics and advantages of the present invention will become readily apparent from the following detailed description that must be read in conjunction with the attached drawings.

Summary of the Invention [0022] According to the present invention, a new and improved heat transfer element basket assembly is provided for a heat exchanger, such as, but not limited to, a rotary regenerative heat exchanger. A stack of heat transfer element plate is suitably supported within the heat transfer element basket assembly of the present invention, such that fluids can flow between them. The basket assembly of the heat transfer element, which can also be considered to be a frame, has an inner end, an outer end, a first and a second side through which fluids and / or gases can be forced to flow. The inner and outer ends of the heat transfer element basket assembly of the present invention are positioned so that they are located opposite each other, while the first side and the second side are similarly properly positioned so that they are also located each other. In addition, the heat transfer element basket assembly of the present invention also embodies a third and a fourth side, which are also properly positioned so that they are located opposite each other. Preferably, though not necessarily, the inner end of the basket's heat transfer element assembly

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The present invention is in accordance with the present invention formed to be narrower than the outer end thereof.

[0023] The heat transfer element basket assembly of the present invention additionally includes a first and a second one-piece side strips which are spaced apart. Each of the one-piece side strips has a central portion that is designed to be arranged along the inner end of the heat transfer element basket assembly of the present invention. In addition, each of the one-piece side strips also includes a first and a second extension extending outward on each side of the central portion of a respective one-piece side strip. For this purpose, the first extension of the first one-piece side strip is designed to be positioned along the third side of the heat transfer element basket assembly of the present invention and has a folded portion extending inwardly over the first side of the heat transfer element basket assembly of the present invention. This folded portion is commonly referred to as a flange and is designed to be operative to prevent the heat transfer element plates that are positioned within the heat transfer element basket assembly from falling outside the heat transfer element basket assembly. heat of the present invention. The second extension of the first one-piece side strip is positioned along the fourth side of the heat transfer element basket assembly of the present invention and has a folded portion which also extends inwardly on the first side of the heat basket assembly. heat transfer element of the present invention. In this way, the first one-piece side strip is located in relation to the first side of the heat transfer element basket assembly of the present invention.

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14/30 [0024] Similarly, the first extension of the second one-piece side strip is designed to be positioned along the third side of the heat transfer element basket assembly of the present invention and has a folded portion that extends inwardly over the second side of the heat transfer element basket assembly of the present invention. The second extension of the second one-piece side strip is designed to be positioned along the fourth side of the heat transfer element basket assembly of the present invention and has a folded portion that also extends inwardly on the second side of the assembly basket of heat transfer element of the present invention. Therefore, the second one-piece side strip is located in relation to the second side of the heat transfer element basket assembly of the present invention.

[0025] Continuing, the heat transfer element basket assembly constructed in accordance with the present invention also includes a pair of spaced corner flanges, which is designed to be operative to connect each of the one-piece side strips to each other. One flange of said pair of spaced corner flanges is located in the corner formed by the inner end and the third side of the heat transfer element basket assembly of the present invention, while the other flange of said pair of spaced corner flanges is located in the corner formed by the inner end and the fourth side of the heat transfer element basket assembly of the present invention. The heat transfer element basket assembly constructed in accordance with the present invention also includes an I-shaped divider plate. This I-shaped divider plate is suitably located within the heat transfer element plates of the basket assembly. of a heat transfer element of the present invention, so as to be

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15/30 operative to effect the interconnection of the first one-piece strip mentioned above with the second one-piece piece mentioned above.

[0026] In accordance with an aspect of the present invention, at the outer end of the heat transfer element basket assembly of the present invention, a cover is provided to which the extensions to which reference was previously made are connected. This lid, according to one embodiment thereof, may be in the form of an open lid, in which this lid does not seal the outer end of the heat transfer element basket assembly of the present invention. Whereas, according to another embodiment thereof, this cap may include a pair of spaced end strips and a pair of spaced corner flanges which differs from the pair of spaced corner flanges to which reference was previously made, which are located at the inner end of the heat transfer element basket assembly of the present invention.

[0027] In accordance with another aspect of the present invention, the heat transfer element basket assembly of the present invention does not include end plates. For this purpose, such end plates have typically been included in the prior art basket heat transfer element forms as a means of providing support therefor. However, due to the advantages that can arise from the heat transfer element basket assembly constructed in accordance with the present invention, the use of such end plates is not required here.

[0028] In accordance with yet another aspect of the present invention, the I-shaped divider plate used in the assembly of the heat transfer element basket of the present invention includes a first end piece which is connected to a piece

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16/30 intermediate, which, in turn, is connected to a second end piece. This first end piece and this intermediate piece and this second end piece are each of the same width, and are suitably arranged with respect to each other, such that the intermediate piece is properly positioned with respect to the first piece of end and the second end piece, so as to extend perpendicularly to both the first end piece and the second end piece. According to a further modification of this aspect of the present invention, each of the first and second end pieces is provided with properly arranged lifting slots. Because these lifting slits are symmetrical, either the first side or the second side of the heat transfer element basket assembly of the present invention can be oriented as the top of the heat transfer element basket assembly. For this purpose, the basket assembly of the heat transfer element of the present invention is thus reversible. In addition, the aforementioned I-shaped divider plate is designed to be connectable to the end of each of the four extensions, that is, to the first extension and the second extension of the first one-piece side strip, as well as to the first extension and to the second extension of the second one-piece side strip of the heat transfer element basket assembly of the present invention.

[0029] In accordance with yet another aspect of the present invention, the first side and the second side of the heat transfer element basket assembly of the present invention are each suitably provided with at least one retaining bar which is designed to be operative to fix the heat transfer element plates which are positioned therewith on the heat transfer element basket assembly of the present invention.

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17/30

Brief Description of the Drawings [0030] In order to facilitate a complete understanding of the present invention, reference is now made to the accompanying drawings. These drawings are not to be construed as limiting the present invention, but are intended to be exemplary only.

[0031] Figure 1 is a perspective view of a prior art form of basket assembly of heat transfer element;

[0032] figure 2a is a first elevation view in an alternative cross section of the previous technique of assembling the basket of heat transfer element of figure 1;

[0033] figure 2b is a second elevation view in alternative cross section of the prior art assembly method of heat transfer element basket of figure 1;

[0034] figure 3 is a perspective view of a rotary regenerative heat exchanger with which a heat transfer element basket assembly constructed in accordance with the present invention can be employed;

[0035] figure 4 is a plan view of the rotary regenerative heat exchanger in figure 3;

[0036] figure 5 is a first representation of a basket assembly of heat transfer element constructed in accordance with certain aspects of the present invention;

[0037] figure 6a is a first representation of a side strip of the basket assembly of heat transfer element of figure 5 constructed in accordance with certain aspects of the present invention;

[0038] figure 6b is a second representation of a side strip of the heat transfer element basket assembly of figure 5 constructed in accordance with certain aspects of the present invention;

[0039] figure 7 represents a dividing plate of the assembly of

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18/30 basket of heat transfer element of figure 5 constructed in accordance with certain aspects of the present invention; and [0040] figure 8 is a second representation of a heat transfer element basket assembly constructed in accordance with certain aspects of the present invention.

Detailed Description of a Preferred Embodiment [0041] With reference to figure 3 of the drawings, a rotating regenerative heat exchanger 300 is represented, in which a basket assembly of heat transfer element constructed according to the present invention. The heat transfer element basket assembly constructed in accordance with the present invention can also be considered to constitute a heat transfer element basket frame. As shown in figure 3 of the drawings, the rotary regenerative heat exchanger 300 includes a housing 310 within which a rotor 312 is enclosed, which, in turn, within which a basket assembly of heat transfer element constructed in accordance with with the present invention is designed to be properly supported. The rotor 312 is in the form of a cylindrical casing 314, which is properly connected, as best understood with reference to figure 3 of the drawings, by means of diaphragms extending radially 315 to a rotor pillar 316. A hot fluid is forced to enter housing 310 through duct 318, whereas the fluid to be heated is forced to enter housing 310 from the opposite end thereof through duct 322.

[0042] The rotor 312 is forced to rotate around its axis in a manner well known to those skilled in the art by means of a motor that is properly connected to the rotor abutment 316 through conventional gears that are suitable for use for this purpose, that have not been illustrated in order to maintain the clarity of

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19/30 illustration in the drawings. As the rotor 312 rotates, the heat transfer element plates that are held within the heat transfer element basket assemblies, which are suitably arranged within the rotor 312 for this purpose are first moved in contact with the hot fluid entering housing 310 through duct 318 in order to thus absorb heat from the hot fluid, being then forced to move into contact with the fluid to be heated, which enters housing 310 through duct 322. As far as wherein the fluid is forced to flow over the heat transfer element plates, these heat transfer element plates absorb the heat from the hot fluid. Then, as the fluid to be subsequently heated is forced to flow over these heat transfer element plates, the fluid to be heated absorbs the heat from the heat transfer element plates, which the transfer element plates heat absorbed from the hot fluid when the heat transfer element plates were in contact with it.

[0043] The heat exchange material which is designed to be suitably provided in the rotor 312 is comprised, according to the present invention, of a stacked arrangement preferably of metal heat transfer element plates which are provided with corrugations or corrugations. , such that when these metal heat transfer element plates are placed in contiguous relationship with each other in such a stacked arrangement, a series of internal passages is thus created between the metal heat transfer element plates and through which the hot fluid and the cooling fluid can then be forced to flow. However, if desired, other types of heat transfer element plates formed from material other than metal or embodying a different pattern of corrugations or undulations,

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20/30 can also be used without departing from the essence of the present invention. According to the present invention, said heat transfer element plates are suitably supported preferably in a heat transfer element basket assembly essentially in a trapezoidal shape.

[0044] As shown in figure 5 of the drawings, in which, in order to maintain the clarity of illustration in the drawings, the stacked arrangement of the heat transfer element plates is not shown, the heat transfer element basket assembly 500 constructed in accordance with the present invention includes an improved reinforcement member in the form of a dividing plate indicated by reference numeral 530. The dividing plate 530, which, according to the preferred embodiment of the present invention, is preferably in the form of I , will be discussed in further detail below. The heat transfer element basket assembly 500, as understood with reference to figure 5 of the drawings, also includes two identically formed side strips 520a and 520b, two identically formed internal flange angles 528a and 528b, four bars of retention, each identified with the same reference numeral 524, and an external cover, which can also be called a cover. The external cover can be either open, that is, be an exposed frame, or be closed, according to your choice, without departing from the essence of the present invention. With further reference to this, the outer cover is comprised of at least two identically formed outer flange angles 522a and 522b and two identically notched end strips 526a and 526b. The inner end of the heat transfer element basket assembly 500 according to the present embodiment of the present invention embodies a narrower end, such that when the transfer element basket assembly

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21/30 of heat 500 is properly mounted inside rotor 312, said narrower inner end of the heat transfer element basket assembly 50 is closer and in relation to the rotor pillar 316. The outer end of the heat assembly heat transfer element basket 500, which is wider than the inner end of the heat transfer element basket assembly 500, is suitably positioned so as to be opposite the inner end of the heat transfer element basket assembly heat 500 when the heat transfer element basket assembly 500 is properly mounted within the rotor 312. As should now become readily apparent, the heat transfer element basket assembly 500 differently from the prior art assembly forms heat transfer element basket where the heat transfer element basket assembly 500 is constructed in accordance with with the present invention is not provided with any end plates. As understood with reference to figure 5 of the drawings, the heat transfer element basket assembly 500 according to the present invention is preferably trapezoidal in shape and is provided with faces that are all open.

[0045] The dividing plate in the form of I 530, as best understood with reference to figure 7 of the drawings, consists of three pieces of metal coil 710a, 710b and 710c, each selected to have an equal width, in order to allow thus a reduction to be realized in the amount of waste that is generated in the production of the same. For this purpose, that is, each of the metal coil parts 710a, 710b and 710c thus only need to be cut to length, and therefore need not be trimmed to width. Following the description, part 710b is preferably attached to each of parts 710a and 710c by means of a full penetration butt weld, although,

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22/30 if desired, another suitable means for purposes of effecting the fixing of the part 710b in each of the parts 710a and 710c can be employed for this purpose without departing from the essence of the present invention. Thus, as should be readily apparent from figure 7 of the drawings, the dividing plate 530, as mentioned above, according to the preferred embodiment of the present invention, has a substantially I-shaped configuration.

[0046] With additional reference, the end pieces 710a and

710c, as best understood with reference to figure 7 of the drawings, each have slits 720 formed therein. Slots 720 are provided for the purpose of allowing lifting hooks to be accepted within them in order to thus allow the heat transfer element basket assembly 500 to be reversible, that is, to allow the assembly of the heat element basket heat transfer 500 is liftable or from end piece 710a, by engaging lifting hooks in slots 720 that have been provided for this purpose in end piece 710a, or from end piece 710c, by engaging lifting hooks in slots 720 which have been provided for this purpose in the end piece 710c. Preferably, according to the present invention, the slits 720 are formed by casting, although, if desired, the slits 720 can be formed by any other means that is suitable for use for this purpose without departing from the essence of the present invention. .

[0047] As will be appreciated, the design of the dividing plate 530 allows a decrease to be made in the weight of its material without there being any concomitant loss in the structural integrity of the 500 heat transfer element basket assembly. This, in turn, instead, it allows a reduction in the cost of the

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23/30 material, as well as a reduction in the time required to assemble the assembly of the heat transfer element basket 500, and that the handling of the divider plate 530 is facilitated. The reversibility provided by the design of the divider plate 530 it allows the maximum durability of the heat transfer element plates, which are suitably supported in the heat transfer element basket assembly 500 to be thus realized as a result thereof. In addition, with the provision of lifting slots 720, which are properly formed on both end pieces 710a and 710c of the divider plate 530, the basket assembly of heat transfer element 500 can be lifted from the rotary regenerative heat exchanger with which the heat transfer element basket assembly 500 constructed in accordance with the present invention is designed to be employed using the method which is described and illustrated in US Patent No. 5,713,411, to Fierle, entitled Means for Lifting Baskets of Heat Transfer Element, which is assigned to the same assignee as the present invention, and which is incorporated here in its entirety.

[0048] According to the method of construction of the heat transfer element basket assembly 500 of the present invention, all four parts, that is, the external flange angles 522a and 522b and the notched end strips 526a and 526b , of the outer cover and the three parts of the divider plate 530 are manufactured and assembled before the assembly of the heat transfer element basket 500 of the present invention is finally assembled. According to the preferred embodiment of the present invention, the welding of the outer cover and the welding of the dividing plate 530 are preferably carried out through the use of an arc provided with an automated flow core. As best understood with reference to figure 5 of the drawings, the dividing plate 530 is designed to be located in the middle

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24/30 of the heat transfer element basket assembly 500, such that a first portion of the heat transfer element plates is positioned so that it is located between the divider plate 530 and the outer cover, and a second the portion of the heat transfer element plates is positioned so as to be located between the dividing plate 530 and the two identically formed internal flange angles 528a and 528b.

[0049] In each of figures 6a and 6b of the drawings, a single piece side strip 520 is shown. More specifically, in figure 6a of the drawings, a side strip 520 is shown, which has been folded to the necessary point in order to allow thus its integration in the heat transfer element basket assembly 500, and in figure 6b of the drawings, an unfolded version of a side strip 520 is illustrated. Each of the single-piece side strips 520, as best understood with reference to figures 6a and 6b of the drawings, includes a notch 620 which is suitably formed along the length of the central portion 625 of the one-piece side strip 520, so as to be located between the extensions 630 and 635, respectively, of the strip one-piece side 520. The notch 620 according to the present invention is preferably formed by casting the material from which the one-piece side strip 520 is manufactured. When the side strip one piece 520 is installed in the heat transfer element basket assembly 500, the central portion 625 having the notch 620 formed therein will be properly positioned through the inner end of the heat transfer element basket assembly 500, such that each of the extensions 630, 635 of the one-piece side strip 520 is properly positioned so that it is located along the length, that is, along one side, of the heat transfer element basket assembly 500, and in order to

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25/30 extend to the outer end of the heat transfer element basket assembly 500. According to the preferred embodiment of the present invention, extensions 630 and 635 are preferably folded inwardly to form an internal flange which is designed to be operative for the purpose of providing support for the heat transfer element plates, which are put into position in the heat transfer element basket assembly 500, such that these heat transfer element plates prevented from falling out of the 500 heat transfer element basket assembly.

[0050] The use of the one-piece side strips 520a and 520b allows a reduction to be carried out at the time required for the assembly of the heat transfer element basket assembly 500 constructed in accordance with the present invention. More specifically, the provision of the single-shaped notch 620 allows the one-piece side strip 520 to be folded to conform to the shape of the heat transfer element basket assembly 500, as described above, while concomitantly the central portion 625 extends beyond the heat transfer element plates, which are put in position in the heat transfer element basket assembly 500, in such a way as to provide locations in which the retaining bars 524 can be welded. Each retaining bar 524 is designed to support the central portion 625 of a side strip 520, so as to extend perpendicularly to such central portion 625 and to allow such retaining bar 524 to be completely welded thereto. Because the side strips 520a and 520b are identical to each other, this allows the retaining bars 524 to remain parallel to each other and that the retaining bars 524 are completely welded to them without any interference between the retaining bars 524 and

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26/30 the flange extending into one of the side strips 520a and 520b.

[0051] After the heat transfer element basket assembly 500 of the present invention has been assembled, the retaining bars 524 are located at the same elevation as that of the plate holding flanges extending into the extensions 630, 635 of the one-piece side strips 520. The extensions 630 and 635 of the one-piece side strips 520 are, according to the preferred embodiment of the present invention, preferably formed to be narrower in width than the width of the side strips, which have so far been employed in the prior art. Because of this, an advantage is to reduce the amount of fluid that is prevented from flowing between the heat transfer element plates, such a fluid block being something that served for the prior art forms disadvantageously characterized by basket assemblies. heat transfer element. Furthermore, by virtue of this, the weight of the heat transfer element basket assembly 500 is allowed to be reduced, as compared to the weight of the prior art forms of the heat transfer element basket assemblies, while concomitantly allowing the the efficiency of the heat transfer element basket assembly 500 constructed in accordance with the present invention is increased as a result of the area of the front element thereof being increased. In addition, because the notch 620 is capable of being formed by pouring the material from which the one-piece side strips 520 are manufactured, it is possible to manufacture these one-piece side strips 520 without creating any scraps during manufacture the same.

[0052] Each of the notched end strips 526a, 526b of the outer cover according to the present invention is intended to be

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27/30 welded to both ends of a respective strip of side strips 520a, 520b. In addition, the notched end strips 526a and 526b according to the preferred embodiment of the present invention are previously formed from a spool of material having the same thickness and width as those from which the single piece side strips 520a and 520b are formed. . Preferably, however, the one-piece side strips 526a and 526b achieve a length that is longer than that of the respective central portion 625 of each of the side strips 520a, 520b. This, in turn, results in the assembly of the heat transfer element basket 500 which is trapezoidal in shape. An additional advantage that is derived for using a coil of the material having the same thickness and width for the purpose of manufacturing both the notched end strips 526a and 526b as well as the one-piece side strips 520a and 520b is thus allowing to carry out a process more efficient manufacturing because the need to make changes to the material is eliminated and because the manufacturing process essentially becomes a repetitive process. Continuing the description, also the notched end strips 526a and 526b are welded to the retaining bars 524, such that, in a similar manner to that of the side strips 520a and 520b, the description of which was explained earlier here, the bars retaining clips 524 are formed to extend parallel to a respective strip of the notched end strips 526a, 526b and support it. In addition to this point, it is thus possible to obtain a total weld between each such retaining bar 524 and each of the respective notched side end strips 526a, 526b. In addition, this weld does not interfere with the elevational positioning of the heat transfer element plates.

[0053] The external formed flange angles 522a and 522b are

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28/30 designed to be operative to provide a high degree of strength as well as a torsionally rigid corner support without any significant increase in the total weight of the heat transfer element basket assembly 500 constructed in accordance with the invention. Similarly, the internal formed flange angles 528a and 528b are also designed to be operative to provide a high degree of strength, as well as a torsionally rigid corner support without any significant increase in the total weight of the heat transfer element basket assembly. 500 constructed in accordance with the present invention. Because both the outer formed flange angles 522a and 522b and the inner formed flange angles 528a and 528b are all symmetrical, each side of a corner of the heat transfer element basket assembly 500 is equally supported. Continuing, it is noted here that the internal formed flange angles 522a and 522b are formed to be the same thickness as that of the side strips 520a and 520b. This allows the internal formed flange angles 522a and 522b to be incorporated into the entire heat transfer element basket assembly 500 without sacrificing any of the spacing in it that the heat transfer element plates should desirably occupy. As a result of this, it is thus possible to realize from there a maximization of the efficiency of the heat transfer element basket assembly 500 constructed in accordance with the present invention.

[0054] Similar to the reference that was made previously, in each inner corner of the heat transfer element basket assembly 500 an internal formed angle 528a and 528b is provided, which is properly connected to each of the single piece side strips 520a and 520b. With additional reference to it, the internal formed angles 528a and 528b, like the external formed flange angles

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29/30

522a and 522b, are designed to be symmetrical with each other. [0055] As will be readily apparent to one skilled in the art, the improved design of the 500 heat transfer element basket assembly constructed in accordance with the present invention, including the use of one-piece side strips 520 as well as the improved design of the dividing plate 530, considerably reduces the time required to assemble the assembly of the heat transfer element basket 500 of the present invention. Also, with the elimination of the solid end plates that have so far been commonly used in the prior art forms of heat transfer element basket assemblies, and also with the decrease in the size of the side strips 520 and the size of the divider plate 530 , the total material costs for assembling the heat transfer element basket 500 constructed in accordance with the present invention are greatly reduced in comparison to the material costs that are required to provide the prior art forms of element basket assemblies heat transfer.

[0056] In figure 8 of the drawings, the heat transfer element basket assembly 500 is illustrated with the heat transfer element plates 850 being suitably supported thereon. For this purpose, figure 8 is a view from the outer end of the heat transfer element basket assembly 500 to the inner end thereof. In the figure 8 of the drawings, two external flange angles 522a and 526b, the two notched end strips 526a and 526b, are shown at the outer end of the heat transfer element basket assembly 500 constructed in accordance with the present invention. , and the ends of each of the one-piece side strip extensions, which are identified, each here, by the same reference numeral

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30/30

825. According to the orientation of figure 8 of the drawings, the one-piece side strip 520b of the heat transfer element basket assembly 500 constructed in accordance with the present invention is shown here as being positioned on top of the basket assembly of heat transfer element 500, while a one-piece side strip 520a of the heat transfer element basket assembly 500 constructed in accordance with the present invention is shown positioned at the bottom of the heat transfer element basket assembly 500. However, due to the reversibility of the heat transfer element basket assembly 500 constructed in accordance with the present invention, which was discussed here earlier, the one-piece side strip 520b could also be positioned so as to be at the bottom of the heat transfer element basket assembly 500, and the one-piece side strip 520a could also be positioned so as to be on top of the heat transfer element basket assembly 500 without departing from the essence of the present invention. With additional reference to figure 8 of the drawings, two retaining bars, each identified by the same reference numeral 524, are shown here positioned so as to be in contiguous relation to the central portion 625 of the side strip 520b. Also, in figure 8 of the drawings, an internal formed flange angle 528 and the dividing plate 530 are illustrated.

[0057] The present invention is not limited in scope by the specific embodiments described here. Certainly, various modifications of the present invention in addition to those described here will become apparent to those skilled in the art from the previous description and the accompanying drawings. Accordingly, such modifications are considered to be within the scope of the appended claims.

Claims (19)

1. Assembly of a heat exchanger heat transfer element basket (500) to receive a plurality of heat transfer element plates (850) in relation sustained therein and having an inner end, an outer end positioned so to be located opposite to said inner end, a first side through which the fluid can flow, a second side through which the fluid can flow, which is positioned so as to be located opposite to said first side, a third side, and a fourth side positioned so as to be located opposite said third side, the basket assembly of heat exchanger heat transfer element (500) characterized by the fact that it comprises: a first one-piece side strip having a central portion (625) arranged along said inner end of said heat exchanger heat transfer element basket assembly (500), a first extension arranged along said third side said assembly of a heat exchanger heat transfer element basket (500) and having a flange extending inwardly over said first side of said operative heat exchanger heat transfer element basket assembly (500) for retaining the plurality of heat transfer element plates (850) when placed in said heat exchanger heat transfer element basket assembly (500), and a second extension arranged along said fourth side said basket assembly of heat exchanger heat transfer element (500) and having a flange extending inwardly over said first side of said assembly of c heat exchanger heat transfer element (500) is operative to retain the plurality of heat transfer element plates Petition 870190046741, of 20/05/2019, page. 34/47 2/10 (850), when put into position in said heat exchanger element transfer basket assembly (500); a second one-piece side strip having a central position disposed along said inner end of said heat exchanger heat transfer element basket assembly (500), a first extension disposed along said third side of said assembly of a heat exchanger heat transfer element basket (500) and having a flange extending inwardly on said second side of said heat exchanger heat transfer element basket assembly (500) operative to retain the plurality of heat transfer element plates (850) when placed in said heat exchanger heat transfer element basket assembly (500), and a second extension arranged along said fourth side of said assembly of a heat exchanger heat transfer element basket (500) and having a flange extending inwardly over said second side of said basket assembly heat exchanger heat transfer element (500) operative to retain the plurality of heat transfer plates when placed in said heat exchanger heat transfer element basket assembly (500); a pair of corner flanges spaced at said inner end of said heat exchanger heat transfer element basket assembly (500) connecting said first one-piece side strip of said heat transfer element basket assembly heat exchanger (500) to said second one-piece side strip of said heat exchanger element heat transfer basket assembly (500); and an I-shaped divider plate (530) disposed within the plurality of heat transfer element plates (850) placed Petition 870190046741, of 20/05/2019, page. 35/47 3/10 in position within said heat transfer element basket assembly and interconnecting said first one-piece side strip of said heat exchanger heat transfer element basket assembly (500) and said second strip one-piece side of said heat exchanger element transfer basket assembly (500) to each other. 2. Assembly of a heat exchanger heat transfer element basket (500) according to claim 1, characterized in that the end plates are excluded. 3. Assembly of a heat exchanger heat transfer element basket (500) according to claim 1, characterized by the fact that the heat exchanger is a rotary regenerative heat exchanger. 4. Heat transfer element basket assembly for heat exchanger (500) according to claim 1, characterized in that said inner end of said heat exchanger element transfer basket basket (500) is narrower than said outer end of said heat exchanger heat transfer element basket assembly (500). 5. Assembly of a heat exchanger heat transfer element basket (500) according to claim 1, characterized in that said I-shaped dividing plate (530) includes a first end piece located adjacent to said first side of said heat exchanger heat transfer element basket assembly (500), a second end piece located adjacent to said second side of said heat exchanger heat transfer element basket assembly (500) 500), and an intermediate piece connecting said first end piece of the Petition 870190046741, of 20/05/2019, page. 36/47 4/10 said I-shaped divider plate (530) with said second end piece of said I-shaped divider plate (530), and said first end piece and said second end piece each being , the same width. 6. Assembly of heat transfer element basket of heat exchanger (500), according to claim 5, characterized by the fact that said first end piece of said dividing plate in the form of I (530) and the said second end piece of said dividing plate in the form of I (530) each has lifting slots formed in two locations therein for use in thus reversing the positioning of said heat transfer element basket assembly of heat exchanger (500). 7. Assembly of heat transfer element basket of heat exchanger (500), according to claim 1, characterized by the fact that said dividing plate in the form of I (530) interconnects said first extension of said first one piece side strip of said heat exchanger heat transfer element basket assembly (500), said second extension of said first one piece side strip of said heat exchanger heat transfer element basket assembly heat (500), said first extension of said second one-piece side strip of said heat exchanger heat transfer element basket assembly (500), and said second extension of said second one-piece side strip of said basket assembly of heat transfer element of heat exchanger (500). 8. Assembly of heat transfer element basket of heat exchanger (500), according to claim 1, characterized by the fact that it still comprises: at least one retaining bar located along the Petition 870190046741, of 20/05/2019, page. 37/47 5/10 said first side of said heat exchanger element transfer basket assembly (500); and at least one retaining bar located along said second side of said heat exchanger heat transfer element basket assembly (500). 9. Heat transfer element basket assembly of heat exchanger (500), according to claim 1, characterized by the fact that it still comprises a lid located on said outer end of said basket of heat transfer element basket heat exchanger heat (500) interconnecting the ends of each one of said first extension of said first one-piece side strip, said second extension of the first one-piece side strip, said first extension of said second side strip one-piece and said second extension of said second one-piece side strip of said heat exchanger element heat transfer basket assembly (500). 10. Assembly of heat transfer element basket of heat exchanger (500) according to claim 9, characterized in that said lid is an open lid. 11. Assembly of heat transfer element basket of heat exchanger (500), according to claim 9, characterized by the fact that: said pair of spaced corner flanges comprises a first pair of spaced corner flanges; and said cap includes a pair of spaced end strips and a second pair of spaced corner flanges. 12. Assembly of a heat exchanger heat transfer element basket (500) to receive a plurality of heat transfer element plates (850) in relation sustained in the Petition 870190046741, of 20/05/2019, page. 38/47 6/10 same and having an inner end, an outer end positioned so as to be located opposite said inner end, a first side through which the fluid can flow, a second side through which the fluid can flow, which is positioned so as to be located opposite said first side, a third side, and a fourth side positioned so as to be located opposite said third side, the basket assembly of heat exchanger heat transfer element (500) characterized by fact that you understand: a pair of one-piece side strips spaced apart from each other, each so as to be positioned along said third side, said inner end, and said fourth side of said heat transfer element basket assembly heat exchanger (500); a pair of spaced corner flanges located so as to be positioned at said inner end of said heat exchanger heat transfer element basket assembly (500) connecting said pair of single piece side strips of said assembly basket of heat exchanger heat transfer element (500); and an I-shaped divider plate (530) having a first end piece positioned so as to be located adjacent to said first side of said heat exchanger heat transfer element basket assembly (500), a second piece end piece positioned to be located adjacent to said second side of said heat exchanger heat transfer element basket assembly (500), and an intermediate piece connecting said first end piece and said second end piece of said I-shaped divider plate (530), said I-shaped divider plate (530) being arranged within the plurality of Petition 870190046741, of 20/05/2019, page. 39/47 7/10 heat transfer element plates (850) put in position within said heat exchanger heat transfer element basket assembly (500) and interconnecting said pair of single piece side strips of said heat assembly basket of heat exchanger heat transfer element (500). 13. Assembly of heat transfer element basket of heat exchanger (500), according to claim 12, characterized by the fact that: said pair of one-piece side strips of said heat exchanger heat transfer element basket assembly (500) includes a first one-piece side strip and a second one-piece side strip; said first one-piece side strip has a central portion (625) disposed along said internal end of said heat exchanger heat transfer element basket assembly (500), a first extension disposed along said third side of said heat exchanger element heat transfer basket assembly (500) and having a flange extending inwardly over said first side of said heat exchanger heat transfer element basket assembly (500) operative to retain the plurality of heat transfer element plates (850), when placed in said heat exchanger element heat transfer basket assembly (500), and a second extension arranged along said room side of said basket of heat exchanger heat transfer element (500) and having a flange extending inwardly over said first side of said plate assembly heat transfer element heat exchanger element (500) operative to retain the plurality of heat transfer element plates (850), when put into position in said heat element basket assembly Petition 870190046741, of 20/05/2019, page. 40/47 8/10 heat transfer from heat exchanger (500); and said second one-piece side strip has a central position disposed along said inner end of said heat exchanger heat transfer element basket assembly (500), a first extension disposed along said third side of the said heat exchanger element transfer basket assembly (500) and having a flange extending inwardly on said second side of said operative heat exchanger element transfer basket assembly (500) for retain the plurality of heat transfer element plates (850) when placed in said heat exchanger heat transfer element basket assembly (500), and a second extension arranged along said fourth side of the assembly of a heat exchanger heat transfer element basket (500) and having a flange extending inwardly over said second side of said basket assembly of it heat exchanger heat transfer device (500) operative to retain the plurality of heat transfer element plates (850) when placed in said heat exchanger element heat transfer basket assembly (500 ). 14. Assembly of heat transfer element basket of heat exchanger (500), according to claim 13, characterized by the fact that said dividing plate in the form of I (530) interconnects said first extension of said first one piece side strip of said heat exchanger heat transfer element basket assembly (500), said second extension of said first one piece side strip of said heat exchanger heat transfer element basket assembly heat (500), said first extension of said second one-piece side strip of said heat exchanger element transfer basket assembly Petition 870190046741, of 20/05/2019, page. 41/47 9/10 (500), and said second extension of said second one-piece side strip of said heat exchanger heat transfer element basket assembly (500). 15. Heat transfer element basket assembly for heat exchanger (500) according to claim 14, characterized by the fact that it still comprises a lid located at said outer end of said basket of heat transfer element basket heat exchanger heat (500) interconnecting the ends of each one of said first extension of said first one-piece side strip, said second extension of said first one-piece side strip, said first extension of said second side strip one-piece and said second extension of said second one-piece side strip of said heat exchanger element heat transfer basket assembly (500). 16. Assembly of heat transfer element basket of heat exchanger (500), according to claim 14, characterized by the fact that: said pair of spaced corner flanges comprises a first pair of spaced corner flanges; and said lid is an open lid having a pair of spaced end strips and a second pair of spaced corner flanges. 17. Assembly of a heat exchanger heat transfer element basket (500) according to claim 12, characterized in that said first end piece of said divider plate in the form I and said second piece of end of said dividing plate in the form of I (530) each have lifting slits formed in two locations in the same for use in carrying out the inversion of the positioning of the assembly of Petition 870190046741, of 20/05/2019, page. 42/47 10/10 basket of heat exchanger heat transfer element (500). 18. Assembly of heat transfer element basket of heat exchanger (500), according to claim 12, characterized by the fact that it still comprises: at least one retaining bar located along said first side of said heat exchanger element heat transfer basket assembly (500); and at least one retaining bar located along said second side of said heat exchanger heat transfer element basket assembly (500). 19. Assembly of heat transfer element basket of heat exchanger (500) according to claim 12, characterized in that end plates are excluded.